Deodorizing fiber

ABSTRACT

A deodorizing fiber is obtained by adding a modified deodorizing powders and a dispersing agent to be mix granulated and spun in a polyester material, and the deodorizing fiber has a fineness between 1 to 10 dpf. The deodorizing fiber satisfies the following conditions: according to the ISO17299 test, a concentration of 100 ppm ammonia and 30 ppm acetic acid is reduced by more than 70% within 2 hours, and the deodorizing effect is 70% or more after washing for 0 times and 10 times.

CROSS-REFERENCE TO RELATED PATENT APPLICATION

This application claims the benefit of priority to Taiwan Patent Application No. 107147005, filed on Dec. 25, 2018. The entire content of the above identified application is incorporated herein by reference.

Some references, which may include patents, patent applications and various publications, may be cited and discussed in the description of this disclosure. The citation and/or discussion of such references is provided merely to clarify the description of the present disclosure and is not an admission that any such reference is “prior art” to the disclosure described herein. All references cited and discussed in this specification are incorporated herein by reference in their entireties and to the same extent as if each reference was individually incorporated by reference.

FIELD OF THE DISCLOSURE

The present disclosure relates to a fiber, and more particularly to a deodorizing fiber which can be dehydrated after being washed several times.

BACKGROUND OF THE DISCLOSURE

In recent years, consumers have paid great attention to the selection of textiles in terms of comfort in use, including moisture absorption and quick drying, heat storage and heat preservation, cool touch and antibacterial deodorization. Many functional fibers have been gradually developed according to market demand. As outdoor sports become more and more popular, eliminating the odor of clothing after exercise is an extremely important part of the consumer demand. In addition, consumers also hope to overcome issues related to body odor through the function of textiles.

In conventional deodorizing fibers, an active carbon-based material, for example, a porous material including bamboo charcoal or coconut shell carbon, is added to the fiber to adsorb the odor on the surface of the fiber to achieve a deodorizing effect.

The principle of the deodorizing material using a porous material to achieve the adsorption effect; however, the adsorption of the porous material can eventually be saturated. A preferred method is using the chemical reaction of the material to neutralize the odor to restore the deodorizing material, called the neutralization effect, by water washing.

Such deodorizing fibers have been disclosed in People's Republic of China Patent Publication No. CN102822411A, which is impregnated with a polyester fiber in an aqueous hydroxy acid solution, and which, after heat treatment, can be washed with water and have a deodorizing effect.

In a similar manner, in People's Republic of China Patent Publication No. CN103343456A, the fabric is impregnated with an aqueous solution of titanium dioxide, and after UV irradiation and heat treatment, the titanium dioxide would have photocatalytic property, so as to make the fabric have antibacterial and deodorizing characteristics.

In People's Republic of China Patent Publication No. CN1756870A, deodorizing particles (0.1-1.5 μm) are combined with resin and fiber by using an adhesive agent and then drying after heat treatment. After washing with water, the fabric may be inferior due to the bonding agent, and subsequent processes may decrease the effect of deodorization after washing.

In People's Republic of China Patent Publication No. CN102978727A, the fiber fabric spinning is made by the masterbatch which is made of an antibacterial agent, and post-treatment with antibacterial agent, so as to increase the antibacterial effect.

SUMMARY OF THE DISCLOSURE

In response to the above-referenced technical inadequacies, the present disclosure provides a modified deodorizing powder. After modification, the deodorizing powder can be uniformly dispersed in the resin, which can effectively help the modified deodorizing powder to be evenly distributed in the fiber. The deodorizing powder is an inorganic powder having good thermal stability and is at least one selected from the group consisting of A1, Ti, Zn, Si, Fe or Zr element oxides or composite oxides thereof. The particle size of the deodorizing powder is smaller than or equal to 1 μm.

The modified deodorizing powder of the present disclosure includes 0.1-20 wt % of the silane coupling agent or the phthalate modifier, in an amount relative to the modified deodorizing powder. Preferably, the modified deodorizing powder of the present disclosure includes 1-10 wt % of 3-acryloxypropyltrimethoxysilane or stearyl titanate, in an amount relative to the modified deodorizing powder.

In one aspect, the present disclosure provides a deodorizing masterbatch, based on the total weight of the deodorizing masterbatch, includes 50-95 wt % of thermoplastic (polymer) resin, 1-30 wt % of modified deodorizing powder, and 0.01-5 wt % of antioxidant. After modification, the modified deodorizing powder can be uniformly dispersed in the resin, and the combination of the modified deodorizing powder and the resin can be improved. The pressure value of the deodorizing masterbatch is less than or equal to 0.5 bar/g. The deodorizing fiber obtained by spinning has a deodorizing effect of more than 70% before and after washing, and has a good deodorizing effect (>70%).

The antioxidant of the present disclosure can be a hindered phenol type or phosphite type antioxidant, preferably bis(2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite.

In one aspect, the present disclosure provides a deodorizing fiber, and more particularly to a deodorizing fiber which exhibits a deodorizing effect even under a low odor concentration, that is, the odor can be eliminated by 70% or more in under two hours.

The deodorizing fiber of the present disclosure has a deodorizing effect of more than 70% before and after washing, and has a good deodorizing effect (>70%).

These and other aspects of the present disclosure will become apparent from the following description of the embodiment taken in conjunction with the following drawings and their captions, although variations and modifications therein may be affected without departing from the spirit and scope of the novel concepts of the disclosure.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure is more particularly described in the following examples that are intended as illustrative only since numerous modifications and variations therein will be apparent to those skilled in the art. Like numbers in the drawings indicate like components throughout the views. As used in the description herein and throughout the claims that follow, unless the context clearly dictates otherwise, the meaning of “a”, “an”, and “the” includes plural reference, and the meaning of “in” includes “in” and “on”. Titles or subtitles can be used herein for the convenience of a reader, which shall have no influence on the scope of the present disclosure.

The terms used herein generally have their ordinary meanings in the art. In the case of conflict, the present document, including any definitions given herein, will prevail. The same thing can be expressed in more than one way. Alternative language and synonyms can be used for any term(s) discussed herein, and no special significance is to be placed upon whether a term is elaborated or discussed herein. A recital of one or more synonyms does not exclude the use of other synonyms. The use of examples anywhere in this specification including examples of any terms is illustrative only, and in no way limits the scope and meaning of the present disclosure or of any exemplified term. Likewise, the present disclosure is not limited to various embodiments given herein. Numbering terms such as “first”, “second” or “third” can be used to describe various components, signals or the like, which are for distinguishing one component/signal from another one only, and are not intended to, nor should be construed to impose any substantive limitations on the components, signals or the like.

A deodorizing powder of the present disclosure is an inorganic powder having good thermal stability and is at least one selected from the group consisting of Al, Ti, Zn, Si, Fe or Zr element oxides and composite oxides thereof. The particle size of the deodorizing powder is smaller than or equal to 1 μm. The surface of the inorganic powder is modified by powder surface modification technique, that is, modifying the surface of the inorganic powder with a modifier such as a silane coupling agent or a phthalic phthalate modifier, and the added amount is 0.1-20 wt %, preferably is 1-10 wt %.

The silane coupling agent of the present disclosure is selected from the group consisting of vinyltrichlorosilane, trimethoxyvinylsilane, triethoxyvinylsilane, vinyltris(β-methoxyethoxy)silane, β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, γ-(2-aziridine) aminopropyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltrimethyldiethoxysilane, γ-glycidoxypropyltriethoxysilane, γ-methylpropenylpropyldimethoxysilane, γ-methylpropenyltrimethoxysilane, γ-methylpropenylpropyldiethoxysilane, γ-methylpropenylpropyltriethoxysilane, N-β(aziridine)γ-aminopropylmethyldimethoxysilane, N-β(aziridine)γ-aminopropyltrimethoxysilane, N-β(aziridine)γ-aminopropyltriethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, N-phenyl-γ-aminopropyltrimethoxysilane, γ-chloropropyltrimethoxysilane, γ-hydrothiopropyltrimethoxysilane, bis[3-(triethoxysilyl)propyl] tetrasulfide (TESPT) and bis[3-(triethoxysilyl)propyl]-disulfide, and preferably is 3-acryloxypropyltrimethoxysilane.

The titanate of the present disclosure is selected from the group consisting of isostearyl titanate, stearyl titanate, oleyl titanate or pyrophosphate titanate, and preferably is stearyl titanate.

The modification process of the deodorizing powder of the present disclosure includes the following steps.

Deodorized powders are placed in a stirred tank with fence type stirring blades and stirred at 250 rpm. Based on the weight of the deodorizing powder, 1-10 wt % of the modifier 3-acryloxypropyltrimethoxysilane is dissolved in a 1:6 volume ratio of the modifier to the isopropanol. The modifier is gradually dropped into the deodorizing powder, the blade stirring rate is adjusted to 1000 rpm, and the dropwise acceleration rate is 1 ml/min. After the completion of the dropwise addition, the stirring tank is heated to 120° C. and stirred for 2 hours to volatilize the isopropanol, so as to obtain the modified deodorizing powder.

A method for preparing the deodorizing masterbatch of the present disclosure includes the following steps.

Based on the total weight of the deodorizing masterbatch, 1-30 wt % of the deodorizing powder, 50-95 wt % of the thermoplastic polymer, and 0.01-5 wt % of the antioxidant are used as raw materials. Further, the thermoplastic polymer is selected from polyester powder or polyester granules having an intrinsic viscosity from 0.2 to 2.0, and preferably 0.8.

After the above raw materials are uniformly mixed into a mixed powder, the mixed powder is kneaded by a twin-screw extruder; the thermoplastic polymer (or resin) is melted at a kneading temperature of 180-280° C. and a rotation speed of 250 rpm.

The terminal group of the modifier on the deodorizing powder is excellent in compatibility with the resin, so that the deodorizing powder is dispersed very uniformly in the resin, and after being cooled by water, the pellet is dried. Further, after drying at 140° C. for 4-6 hours, the deodorizing masterbatch of the present disclosure was obtained.

More specifically, the modified deodorizing powder of the present disclosure is an inorganic material, and after the surface is modified, the deodorizing powder can be uniformly dispersed in the resin. Therefore, the deodorizing masterbatch of the present disclosure has no pressure phenomenon in the spinning process, has good spinning performance, and can be subjected to spinning production for a long period of time.

The antioxidant of the present disclosure can be a hindered phenol type or phosphite type antioxidant.

The phosphite type antioxidant can be selected from dimethyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, diethyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dipropyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dibutyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dipentyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dihexyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, diheptyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite, bis(3,5-di-t-butyl-4-hydroxybenzyl)diethylphosphonate manganese, bis(3,5-di-t-butyl-4-hydroxybenzyl)diethylphosphonate magnesium, bis(3,5-di-t-butyl-4-hydroxybenzyl)diethylphosphonate calcium, or bis(3,5-di-t-butyl-4-hydroxybenzyl)diethylphosphonate zinc, and preferably is bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite.

The deodorizing fiber of the present disclosure is obtained by melt-spinning the dried deodorizing masterbatch. The fiber structure of the deodorizing fiber can be formed by composite spinning to form a core-sheath structure, a core portion being polyester, a sheath portion being deodorizing masterbatch, and the core-sheath ratio (core/sheath) varies between 40/60 to 60/40. The deodorant is distributed on the outer layer of the fiber and can effectively react with the odor gas.

The method for producing the deodorizing fiber of the present disclosure includes the following steps.

The deodorizing masterbatch of the present disclosure is used as raw material, and is made into a core-sheath structure of deodorizing partial oriented yarn (POY) by conjugate spinning at a spinning temperature of 230° C. to 290° C. and a spinning take-up speed of 1000 m/min to 3000 m/min, and then the POY is made into a draw textured yarn (DTY) by false twisting, that is, the deodorizing fiber of the present disclosure. The deodorizing fiber has a diameter of 10-30 micrometers (μm) and a fiber fineness of 1-10 dpf.

The fiber structure of the deodorizing fiber of the present disclosure is a core-sheath structure, and the deodorizing powder is wrapped in the fiber sheath portion, so that after dewatering for 10 times, the deodorizing effect of the deodorizing fiber can be maintained. Therefore, the deodorizing fiber of the present disclosure can be widely used in the fiber application industry, and includes textile products for underwear, home furnishings, and outdoor sports.

Hereinafter, a plurality of embodiments (embodiments 1-4) for producing the modified deodorizing powder and processing into the deodorizing masterbatch and deodorizing fiber are provided, and a comparative embodiment is provided to assist in explaining the purpose, efficacy, and principle of the present disclosure.

The modified deodorizing powder and the deodorizing fiber produced in each of the embodiments and the comparative embodiment were evaluated for physical properties according to the following methods.

1. Pressure test. The deodorizing masterbatch was diluted to 8% by the neat PET resin, and the filter pressure value tester (brand: LabTech, model: LTF34-GP) was used to evaluate the pressure value of the deodorizing masterbatch, and the filter was 15 μm. The lower the pressure value, the better the dispersion of the deodorizing powder in the polyester resin.

2. Deodorization test. According to ISO 17299, the sample size is 10 cm×10 cm knitted fabric, regardless of front or back, the temperature is 20° C., 65% RH, the sample is allowed to sit for 24 hours, with 3 L Tedlar-bag through different concentrations of the gas (initial concentration of ammonia is 100 ppm or acetic acid is 30 ppm). A test tube is used for measurement, and the gas concentration in the bag after 120 minutes is recorded to calculate the percentage of gas reduction.

First Embodiment

1. Modification of deodorizing powder. According to formulation No. A1 of Table 1, the deodorized powders Al₂O₃, ZnO, and SiO₂ were placed in a stirred tank with fence type stirring blades and stirred at 250 rpm. Based on the weight of the deodorizing powder, 1 wt % of the modifier 3-acryloxypropyltrimethoxysilane was dissolved in a 1:6 volume ratio of the modifier to the isopropanol and gradually dropped into the deodorizing powder. The blade stirring rate was adjusted to 1000 rpm, and the dropwise acceleration rate was 1 ml/min. After the completion of the dropwise addition, the stirring tank was heated to 120° C. and stirred for 2 hours to volatilize the isopropanol, so as to obtain the modified deodorizing powder.

2. Preparation of deodorizing masterbatch. According to the formulation of Table 2, 79.5 wt % of PET polyester resin, 20 wt % of modified deodorizing powder A1, and 0.5 wt % of bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite (hereinafter referred to as antioxidant RCPEP36) were used as a raw material and were melt-granulated by a twin-screw extruder.

3. Production of deodorizing fiber. The fiber size is 75D/72F, the core is dried polyester, the sheath is dried deodorizing masterbatch, and the core-sheath ratio is 50/50. The spinning temperature is 280° C., and the spinning speed is 2500 m/min. A partially stretched yarn (POY) is produced, and then processed into a draw textured yarn (DTY), woven into a knitted fabric, and was dyed and washed with water.

The pressure value of the produced deodorizing masterbatch was measured, and the results are shown in Table 2. After the deodorizing masterbatch was spun and knitted, the deodorizing effect was measured as shown in Tables 3 and 4 after dyeing. After the knitted fabric was washed for 10 times, the deodorizing effect of the test was as shown in Table 5. The deodorizing effect was maintained at the initial level, and the deodorizing effect of the yarn before washing or after washing was not affected.

Second Embodiment

1. The modified deodorizing powder was obtained in the same manner as in the first embodiment, except that the modifier was added in an amount of 5 wt % based on the weight of the deodorizing powder (Table 1, Formula No. A2).

2. Referring to the raw materials formula of Table 2, 79.5 wt % of PET polyester resin and 20 wt % of modified deodorizing powder A2, and 0.5 wt % of antioxidant RCPEP36 were used as raw materials, and were melted and granulated by a twin-screw extruder to obtain deodorizing masterbatch.

The pressure value of the produced deodorizing masterbatch was measured, and the results are shown in Table 2. After the deodorizing masterbatch was spun and knitted, the deodorizing effect was measured as shown in Tables 3 and 4 after dyeing. After the knitted fabric was washed for 10 times, the deodorizing effect of the test was as shown in Table 5. The deodorizing effect was maintained at the initial level, and the deodorizing effect of the yarn before washing or after washing was not affected.

Third Embodiment

1. The modified deodorizing powder was obtained in the same manner as in the first embodiment, except that the modifier was added in an amount of 10 wt % based on the weight of the deodorizing powder (Table 1, Formula No. A3). 2. Referring to the raw materials formula of Table 2, 79.5 wt % of PET polyester resin and 20 wt % of modified deodorizing powder A3, and 0.5 wt % of antioxidant RCPEP36 were used as raw materials, and were melted and granulated by a twin-screw extruder to obtain deodorizing masterbatch.

The pressure value of the produced deodorizing masterbatch was measured, and the results are shown in Table 2. After the deodorizing masterbatch was spun and knitted, the deodorizing effect was measured as shown in Tables 3 and 4 after dyeing. After the knitted fabric was washed for 10 times, the deodorizing effect of the test was as shown in Table 5. The deodorizing effect was maintained at the initial level, and the deodorizing effect of the yarn before washing or after washing was not affected.

Fourth Embodiment

1. The modified deodorizing powder was obtained in the same manner as in the first embodiment, except that the modifier was stearyl titanate and was added in an amount of 1 wt % based on the weight of the deodorizing powder (Table 1, Formula No. A4).

2. Referring to the raw materials formula of Table 2, 79.5 wt % of PET polyester resin and 20 wt % of modified deodorizing powder A4, and 0.5 wt % of antioxidant RCPEP36 were used as raw materials, and were melted and granulated by a twin-screw extruder to obtain deodorizing masterbatch.

The pressure value of the produced deodorizing masterbatch was measured, and the results are shown in Table 2. After the deodorizing masterbatch was spun and knitted, the deodorizing effect was measured as shown in Tables 3 and 4 after dyeing. After the knitted fabric was washed for 10 times, the deodorizing effect of the test was as shown in Table 5. The deodorizing effect was maintained at the initial level, and the deodorizing effect of the yarn before washing or after washing was not affected.

First Comparative Example

1. The deodorizing powder was not modified (Table 1, Formula No. A5).

2. Referring to the raw materials formula of Table 2, 79.5 wt % of PET polyester resin and 20 wt % of deodorizing powder A5, and 0.5 wt % of antioxidant RCPEP36 were used as raw materials, and were melted and granulated by a twin-screw extruder to obtain deodorizing masterbatch.

The pressure value of the produced deodorizing masterbatch was measured, and the results are shown in Table 2. After the deodorizing masterbatch was spun and knitted, the deodorizing effect was measured as shown in Tables 3 and 4 after dyeing. After the knitted fabric was washed for 10 times, the deodorizing effect of the test was as shown in Table 5. The deodorizing effect was maintained at the initial level, and the deodorizing effect of the yarn before washing or after washing was not affected.

Results

1. After the deodorizing powders of the first embodiment to the third embodiment were treated with the modifier 3-acryloxypropyltrimethoxysilane, and the deodorizing powder of the fourth embodiment was treated with the modifier stearyl titanate, the deodorizing powder of each embodiment was mixed and granulated with resin and the dispersing agent. After the deodorizing masterbatch was dried, the pressure value was evaluated by a filter pressure tester, and the test value (see Table 2) was less than or equal to 0.5 bar/g, which represents well dispersion of the deodorizing powder in the polyester resin.

2. The deodorizing powder of the first comparative embodiment was not modified and was directly mixed and granulated with resin and the dispersing agent. After the deodorizing masterbatch was dried, the pressure value was evaluated by a filter pressure tester, and the test value (see Table 2) was 2.4 bar/g and over than 0.5 bar/g, which represent poor dispersion of the deodorizing powder in the polyester resin.

3. According to the above two conclusions, the deodorizing powder treated by the modifier can effectively help the deodorizing powder to be dispersed in the polyester resin, reduce the phenomenon of powder agglomeration, improve on the issue of rising pressure, and contribute to the smoothness of the spinning process of the deodorizing fiber.

4. The deodorizing masterbatch obtained from the first embodiment to the fourth embodiment were subjected to core-sheath type composite spinning after drying, the core was polyester, and the sheath was deodorizing masterbatch. After being rolled, the deodorizing fiber was processed into draw textured yarn, woven into a knitted fabric, and was measured after dyed. The deodorizing effect of the yarn made of surface-modified deodorizing powder was obviously greater than the yarn made of deodorizing powder that was not modified, as shown in Table 3. After washing for 10 times, the same results were obtained, as shown in Table 4.

5. Compared with the first comparative embodiment, the deodorizing effect of the first embodiment to the fourth embodiment had no obvious change before and after washing, since the deodorizing powder was directly added into the fiber and combined with resin, rather than post-processing (impregnation or coating) on the surface of the knitted fabric through an adhesive agent. Therefore, the deodorizing effect of the first embodiment to the third embodiment before and after washing is no different, as shown in Table 5.

TABLE 1 Modified deodorizing powder formula Number of modified powder formula Item Material (wt %) A1 A2 A3 A4 A5 Modified Deodorizing Al₂O₃, ZnO, SiO₂ 99  95  90 99  100 deodorizing powder powder Modifier 3-acryloxypropyl 1 5 10 — — trimethoxysilane stearyl titanate — — — 1 —

TABLE 2 Deodorizing masterbatch formula (unit: wt %) and pressure First First Second Third Fourth Comparative Item Material Embodiment Embodiment Embodiment Embodiment Example Polyester PET(IV = 0.8) 79.5 79.5 79.5 79.5 79.5 Modified A1 20 — — — — deodorizing A2 — 20 — — — powder A3 — — 20 — — A4 — — — 20 — A5 — — — — 20 Antioxidants RC PEP 36*¹ 0.5 0.5 0.5 0.5 0.5 Pressure — 0.3 0.02 0.002 0.4 2.4 value (bar/g) Note 1: RC PEP 36 represents bis(2,6-di-tert-butyl-4-methylphenyl) entaerythritol diphosphite.

TABLE 3 Deodorizing fiber (knitted fabric) and the deodorizing effect after 2 hours First First Second Third Fourth Comparative Item blank Embodiment Embodiment Embodiment Embodiment Example Fiber specification 75D/72F 75D/72F 75D/72F 75D/72F 75D/72F 75D/72F Ammonia Concentration 92 2 1 2 2 10 (Initial after 2 hr concentration = (ppm) 100 ppm) Reduction NA 98 99 98 98 89 rate (%) Acetic acid Concentration 17 1 2 1 1 5 (Initial after 2 hr concentration = (ppm) 30 ppm) Reduction NA 94 88 94 94 70 rate (%) Reduction rate = (S_(b) − S_(m))/S_(b)*100% S_(b): test value of blank, S_(m): test value of embodiment

TABLE 4 Deodorizing fiber (knitted fabric) washed 10 times and the deodorizing effect after 2 hours First First Second Third Fourth Comparative Item blank Embodiment Embodiment Embodiment Embodiment Example Fiber specification 75D/72F 75D/72F 75D/72F 75D/72F 75D/72F 75D/72F Ammonia Concentration 92 5 4 4 3 14 (Initial after 2 hr concentration = (ppm) 100 ppm) Reduction NA 95 96 96 97 85 rate (%) Acetic acid Concentration 17 2 2 3 3 6 (Initial after 2 hr concentration = (ppm) 30 ppm) Reduction NA 88 88 82 82 65 rate (%) Reduction rate = (S_(b) − S_(m))/S_(b)*100% S_(b): test value of blank, S_(m): test value of embodiment

TABLE 5 Comparison of deodorizing effect of deodorizing fiber (knitted fabric) before and after washing for 10 times First Before and First Second Third Fourth Comparative Item after washed Embodiment Embodiment Embodiment Embodiment Example Fiber — 75D/72F 75D/72F 75D/72F 75D/72F 75D/72F specification Ammonia Deodorization 98 99 98 98 89 reduction concentration rate(%) before washed Deodorization 95 96 97 97 85 concentration after washed Acetic acid Deodorization 94 88 94 94 70 reduction concentration rate(%) before washed Deodorization 88 88 82 82 65 concentration after washed

The foregoing description of the exemplary embodiments of the disclosure has been presented only for the purposes of illustration and description and is not intended to be exhaustive or to limit the disclosure to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching.

The embodiments were chosen and described in order to explain the principles of the disclosure and their practical application so as to enable others skilled in the art to utilize the disclosure and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those skilled in the art to which the present disclosure pertains without departing from its spirit and scope. 

What is claimed is:
 1. A deodorizing fiber obtained by melt spinning a deodorizing masterbatch, characterized in that the deodorizing masterbatch includes the following components and the sum of the components based on the total weight of the deodorizing masterbatch is 100% by weight: (a) 50-95 wt % of a thermoplastic polymer selected from polyester powders or polyester granules having an intrinsic viscosity from 0.2 to 2.0; (b) 1-30 wt % of modified deodorizing powders which are selected from one or more than one of the oxidation or the composite oxides of aluminum, titanium, zinc, silicon, iron and zirconium elements modified by a silane coupling agent or a phthalate modifier, and the modified deodorizing powder has a particle size of 1 μm; and (c) 0.01-5 wt % of an antioxidant; wherein the deodorizing fiber satisfies the following conditions: according to the ISO17299 test, a concentration of 100 ppm ammonia and acetic acid is reduced by more than 70% within 2 hours, and the deodorizing effect is 70% or more after washing for 0 times and 10 times.
 2. The deodorizing fiber according to claim 1, wherein the deodorizing masterbatch has a pressure value of less than or equal to 0.5 bar/g.
 3. The deodorizing fiber according to claim 1, wherein the deodorizing masterbatch has a fiber fineness of from 1 to 10 dpf.
 4. The deodorizing fiber according to claim 2, wherein the deodorizing masterbatch has a fiber fineness of from 1 to 10 dpf.
 5. The deodorizing fiber according to claim 3, wherein the fiber structure of the deodorizing fiber is a core-sheath type structure, a core portion being polyester, a sheath portion including the modified deodorizing powders, and a core-sheath ratio of the deodorizing fiber being between 40:60 and 60:40.
 6. The deodorizing fiber according to claim 4, wherein the fiber structure of the deodorizing fiber is a core-sheath type structure, a core portion being polyester, a sheath portion including the modified deodorizing powders, and a core-sheath ratio of the deodorizing fiber being between 40:60 and 60:40.
 7. The deodorizing fiber according to claim 3, wherein the diameter of the deodorizing fiber is from 10 μm to 30 μm.
 8. The deodorizing fiber according to claim 4, wherein the diameter of the deodorizing fiber is from 10 μm to 30 μm.
 9. The deodorizing fiber according to claim 1, wherein the modified deodorizing powders further include 0.1-20 wt % of the silane coupling agent or the phthalate modifier.
 10. The deodorizing fiber according to claim 1, wherein the modified deodorizing powders further include 1-10 wt % of 3-acryloxypropyltrimethoxysilane or stearyl titanate.
 11. The deodorizing fiber according to claim 1, wherein the intrinsic viscosity of the thermoplastic polymer is 0.8.
 12. The deodorizing fiber according to claim 1, wherein the antioxidant is a hindered phenol type antioxidant or a phosphite type antioxidant.
 13. The deodorizing fiber according to claim 1, wherein the antioxidant is bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite. 